用英语写出下列数字49990001840591952143421514396664383/47/303/8 7/121%

four million nine hundred and ninety-nine hundred thousand
eighteen million four hundred and five thousand nine hundred and nineteen
five hundred and twenty-one million four hundred and thirty-four thousand two hundred and fifteen
one billion four hundred and thirty-nine million six hundred and sixty-six four hundred and thirty-eight
three fourths seven thirtieths three eighths seven twelfths one percent forty-six percent